TIS-B / FIS-B Display

I believe the very old Garmin GDL90 and a newer Freeflight Rangr unit are the only TSO'd UAT transceivers. 

How well will the IFD-540 interface with either of these units on launch day?

I'm not 100% sure if all UAT or 1090ES receivers create data a standardized ARINC 429 dataset for FIS-B and TIS-B, but anyway, I'd be interested in a FIS-B/TIS-B display solution.

Recently I added L-3 Lynx to my panel, alongside my IFD540. I fly in Canada, where FIS-B and TIS-B are available along the border, and at increasing altitudes farther away. I noticed this week that I was getting a "no TIS-B" symbol and thick lines drawn across my display. These lines degraded the usability of the display, especially any other blue lines such as control zones. I figured out that tapping the Wx Overlay button and turning off the weather display fixed the problem, but I will have to remember to turn it back on again when in coverage. Assuming that "no TIS-B" and the lines are related, I suggest one of two things:

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Could it be you're receiving UAT transponders directly? Some of the cheaper ADS-B Out solutions (e.g. Garmin GDL-82, Navworx, etc.) sniff the aircrafts transponder and then send out a UAT signal that could be picked up by the SkyTrax 100.

My understanding is that TIS-B (Traffic) is transmitted on both 978 and 1090 MHz.  The GTX345 ADS-B In receiver is dual link so it can pick up traffic from either frequency, so it should not matter if Traffic info comes in at 978, it is still TIS-B.

Thanks HenryM.  It sounds like once I am in the air the "No TIS-B" warning should go away.

HenryM wrote: FYI, when I'm in the air, I often get some sort of datalink error when there are no AIRMETS or SIGMETS being transmitted over some period of time. This started with 10.2.1. The alert stays on all the time after it comes on, and thus the AUX button is always lit up. If there are actual significant weather reports, then the alert goes away. To me, this is a flaw in handling the alert. The IFD is alerting that it hasn't received any significant weather reports in the last 10 or 20 minutes. However, it doesn't let me clear the alert once I acknowledge it. We'll see if Avidyne does anything about it. FIS-B also has its quirks.